Embedded Linux Experts

1 config GFS2_FS
2 tristate "GFS2 file system support"
3 depends on (64BIT || LBDAF)
4 select FS_POSIX_ACL
5 select CRC32
6 select QUOTACTL
7 help
8 A cluster filesystem.
910 Allows a cluster of computers to simultaneously use a block device
11 that is shared between them (with FC, iSCSI, NBD, etc...). GFS reads
12 and writes to the block device like a local filesystem, but also uses
13 a lock module to allow the computers coordinate their I/O so
14 filesystem consistency is maintained. One of the nifty features of
15 GFS is perfect consistency -- changes made to the filesystem on one
16 machine show up immediately on all other machines in the cluster.
1718 To use the GFS2 filesystem in a cluster, you will need to enable
19 the locking module below. Documentation and utilities for GFS2 can
20 be found here: http://sources.redhat.com/cluster2122 The "nolock" lock module is now built in to GFS2 by default. If
23 you want to use the DLM, be sure to enable IPv4/6 networking.
2425 config GFS2_FS_LOCKING_DLM
26 bool "GFS2 DLM locking"
27 depends on (GFS2_FS!=n) && NET && INET && (IPV6 || IPV6=n) && \
28 CONFIGFS_FS && SYSFS && (DLM=y || DLM=GFS2_FS)
29 help
30 Multiple node locking module for GFS2
3132 Most users of GFS2 will require this. It provides the locking
33 interface between GFS2 and the DLM, which is required to use GFS2
34 in a cluster environment.

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